Tube type boiler for steamships



1953 R. M. CLAUSER ET AL TUBE TYPE BOILER FOR STEAMSHIPS Filed Oct. 26, 1951 RAYMOND M.CLAUSER PETER A PETERSEN IN VEN TORS Patented Nov. 10, 1953 UNITED TUBE TYPE BOILER FOR STEAMSHIPS Raymond M. Clauser and Peter A. Petersen, Fort Worth, Tex.

Application October 26, 1951, Serial No. 253,397

3 Claims.

This invention relates to large commercial type boilers such as those used in steam ships, and has for its object the conservation of energy which is ordinarily dissipated through smoke stacks, blower fans, fuel heaters and the like.

In a tube type boiler of the referred to class, the heat wasted through the smoke stack is approximately 32%, and 6.5% of the heat is lost through each of the blower fans. Additional amounts of energy are lost through the fuel heater and the fuel oil service pumps. Thus, in a conventional boiler for steam ships, as much as 60% or more of the energy is lost, and while the present invention does not purport to conserve and utilize oil energy generated from a source of power, the invention will materially reduce the amount of energy heretofore lost in boilers of the referred to type.

The invention will be more readily understood by reference to the following description and the accompanying drawings, wherein:

Figure 1 is a schematic view of an arrangement for adapting the invention to the propelling machinery of a steam ship.

Figure 2 is a transverse sectional view of a steam boiler embodying the features of the invention.

The form of the invention shown includes a closed case or housing I having a steam drum II mounted in the upper portion thereof, together with starboard and port lower drums l2 and IS in the lower portion of the case. The lower drums I2 and I3 are connected with the steam drum by separate banks of boiler tubes [4 and I5 which are preferably separated along their f inner rows, as at a and b, to accommodate elec trical heating units IE therebetween. Similarly, other electrical heating elements I! are provided around and in the proximity of the boiler tubes I4 and I5 and around the lower drums l2 and I3. A super heater I8 is shown above the steam drum II and is connected therewith by means of other tubes 19. Additional heating elements are positioned beneath super heater IS.

The entire case is lined with a heat reflecting of sheet material 22 and is arranged in the proximity of the outer heating elements I! including those around the lower drums I 2 and I 3. Portions of the material may be arcuately formed to provide reflectors 23 for concentrating the heat on the boiler tubes 14 and I5 and whereby steam may be generated within a relatively short period of time. In the form of the invention shown, the lower drums l2 and [3 are separated from each other and the case or housing l0 extends upwardly therebetween for proper distribution of weight within a steam ship, not shown. The separate side portions of the case I0 are mounted on supports 24, and a filler of insulating material 25 is provided between the case Ill and the outer surface of the reflecting material 22. A discharge or outlet pipe 26 is connected with the super heater [8, and which pipe is provided with an additional case or housing 21 and is provided with the described insulating material 25 therein.

As shown in Figure 1, the described boiler construction is used in connection with an electric generator 28 driven by a diesel engine 30 or the like. The generator 28 is connected with the electrical heating elements 16 and [1 by means of wire connections 3|, in the usual manner, and which connections are not, therefore, described in detail. The super heater [8 is connected with and drives a turbine 32 by means of the steam delivered through the described boiler outlet pipe 26, and which turbine drives the ships propeller 33 by means of a turbine shaft 34, reduction gear 35 and a propeller shaft 36 arranged in the usual manner and as shown in Figure 1. The steam discharged from the turbine 32 is delivered to a condenser 31 by means of a connecting duct 38, and after the steam has been condensed into boiler, the latter is returned to the boiler H] by means of a connecting pipe 39 and a feed pump 40 installed therein.

In operation, the usual openings, such as the smoke stack, blower fans, power heaters and the like are entirely eliminated and whereby the described ship propelling arrangement has all of the advantages derived from steam operation, and at the same time most of the heat heretofore dissipated is employed advantageously. It is to be understood that the invention is not limited to boilers having multiple lower drums l2 and I 3, or the specific arrangement of reflectors 23, but may be made in many ways within the scope of the appended claims.

What is claimed is:

1. A steam boiler for steam ships or the like comprising a closed case, a steam drum within the upper portion of said case, at least one lower drum within the lower portion of the said case, tubes connecting said drums, electrical heating elements adjacent said tubes positioned outwardly thereof and inwardly directed with respect thereto, and steam outlet means connected with said upper drum.

2. A boiler for steam ships or the like as defined in claim 1, and wherein a lining of reflecting 3 material is provided within said case and adjacent said heating elements, and an insulating medium between said reflecting material and said case.

3. A boiler for steam ships or the like as defined in claim 1, and including a lining of reflecting material within and spaced from said case, insulating material between said reflecting material and said case, and arcuate concave reflectors formed in said reflecting material adjacent said heating elements in the proximity of said boiler tubes.

RAYMOND M. CLAUSER. PETER A. PETERSEN.

References Cited in the file of this patent UNITED STATES PATENTS 5 Number 10 Number Name Date Mitchell Aug. 11, 1891 Woodson July 1, 1924 FOREIGN PATENTS Country Date Switzerland Nov. 16, 1950 

